Judges 18:27-29

27But the people of Dan took what Micah had made, and the priest who belonged to him, and they came to Laish, to a people a  quiet and unsuspecting, and b  struck them with the edge of the sword and burned the city with fire. 28And there was no deliverer because it was c  far from Sidon, and they had no dealings with anyone. It was in the valley that belongs to d  Beth-rehob. Then they rebuilt the city and lived in it. 29And they named the city e  Dan, after the name of Dan their ancestor, who was born to Israel; but f  the name of the city was Laish at the first.
Copyright information for ESV